BRACHYLTRA AND MACRURA OP HAWAIIAN ISLANDS. 
891 
Chelipeds and legs granulate all over. Chelipeds less than twice as long as carapace; palm longet 
than fingers. Legs slender. 
Spine at end of penult segment of male abdomen relatively long and slender. 
Dimensions. — Length of female type 8.8 mm., width 9.1 mm. ; length of male, station 3855, 6 mm., 
width 5.8 mm. 
Named for Dr. Charles H. Gilbert of the Hawaiian Expedition, 1902. 
Distribution. — South coast of Molokai Island, 130 to 127 fathoms, station 3855; north coast of 
Molokai Island, 66 to 96 fathoms, station 3906; vicinity of Laysan Island, 163 to 59 fathoms, station 
3939 (type locality); northeast coast of Hawaii Island, 83 to 113 fathoms, station 4062; Aleunihana 
Channel, 176 to 49 fathoms, station 4066. Cat. No. of type, 29869. 
Persephona brevimana (Alcock). 
Myra brevimana Alcock, Journ. Asiat. Soc. Bengal, LXV, 1896, 206; Illus. Zool. Investigator, 
Crust., pi. xxix, fig. 8, 1897. Borradaile, Fauna and Geogr. Maidive and Laccadive Arch., I, 
438, 1903. 
Distribution. — Northeast coast of Hawaii Island, 77 to 75 fathoms, station 4057; north coast of 
Maui Island, 52 to 56 fathoms, station 4071; vicinity of 
Kauai Island, 68 to 179 fathoms, station 4128. 
Length of largest specimen 14.5 mm. 
Family DORIPPID^. 
Ethusa mascarone hawaiiensis, subsp. nov. 
(PI. xv, fig. 4.) 
This form is very near typical E. mascarone, yet 
differs from it in quite another direction than does the 
americana form. The submedian pair of frontal teeth 
are triangular, not acuminate, and are separated from 
each other by an emargination which is nearly rectangu- 
lar at base; the outer pair are small, slender, acuminate; 
and situated midway on the outer slope of the inner 
pair. Distance between tips of teeth on one side only 
about one-third distance between tips of median pair. 
The outer orbital tooth is smaller than in typical mascarone and is directed slightly outward. 
There are two lobules side by side on the cardiac region; the propodi of the last two legs are more 
slender than in the species; the antennary flagellum bears a few hairs. In the. only male, which is 
immature, the fingers of the large chela are longer and slenderer than in the male of the'European form. 
Distribution . — South coast of Oahu, 211 to 53 fathoms, station 3810; west coast of Hawaii Island, 
198 to 147 fathoms, station 4045; Pailolo Channel, 143 to 122 fathoms, station 4101 (type locality). 
Cat. No. of type, 29930. 
Etlausina gracilipes ( Miers). 
Ethusa ( Etlmsina ) gracilipes Alcock, Deep-Sea Brach. Investigator, p. 34, 1899, and synonymy. 
Distribution. — Pailolo Channel, 284 to 290 fathoms, station 3867; south coast of Oahu, 308 to 322 
fathoms, station 3909; vicinity of Kauai Island, 257 to 478 fathoms, stations 4028 and 4132. 
These specimens have the spine at the antero-lateral angle of the carapace short, as in Miers’s 
variety robusta, but not so strongly bent outward- 
4045, x 9f. 
